| Variables | Probit coefficients | P > /Z/ | SD error |
| Sex of respondent (SexR) | 0.0485278 | 0.885 | 0.334660 |
| Age of respondent (AgeR) | 0.0116001 | 0.325 | 0.011779 |
| Family size of resp. (FamSR) | 0.0035174 | 0.941 | 0.047666 |
| Education level of resp. (EduR) | 0.0798405 | 0.741 | 0.241491 |